Question 1

A patient comes to radiology for a double-contrast barium enema.The patient cannot lie on her side during the study.Which of the following projections could replace the lateral rectum projection?

Accepted Answer

A)  AP axial
B)  LPO axial projection
C)  Ventral decubitus
D)  Dorsal decubitus

Question 2

Why is the posteroanterior (PA)  rather than the AP projection recommended for a small bowel series?

Accepted Answer

A)  Less gonadal dose for female patients
B)  More comfortable for patient
C)  Places small intestine closer to image receptor (IR) 
D)  Better separation of loops of small intestine

Question 3

How much CR angulation is required for the AP axial projection taken during a barium enema examination?

Accepted Answer

A)  10° to 15°
B)  20° to 25°
C)  30° to 40°
D)  45°

Question 4

The circular staircase, or herringbone pattern, is a common radiographic sign for a mechanical ileus.

Accepted Answer

A) True 
 B)False

Question 5

Which of the following conditions would contraindicate the use of a cathartic before a barium enema?

Accepted Answer

A)  Colitis
B)  Diverticulosis
C)  Obstruction
D)  Diverticulitis

Question 6

What type of enema tip is recommended for a barium enema on an infant?

Accepted Answer

A)  Rectal retention
B)  Plastic disposable
C)  10 Fr, flexible silicone catheter
D)  Foley catheter

Question 7

Synthetic latex enema tips are safe to use for latex-sensitive patients.

Accepted Answer

A) True 
 B)False

Question 8

A radiograph of an AP barium enema (BE)  projection reveals poor visualization of the sigmoid due to excessive superimposition of the sigmoid colon and rectum.How can this area be better visualized on the repeat exposure?

Accepted Answer

A)  Angle the central ray (CR)  30° to 40° cephalad with AP projection.
B)  Increase kV.
C)  Take a PA projection with the patient in the left lateral decubitus position.
D)  Take a PA projection with a 30° to 40° cephalad CR angle.

Question 9

The height of the enema bag should not exceed 36 inches (92 cm) above the radiographic table at the beginning of the study.

Accepted Answer

A) True 
 B)False

Question 10

The enteroclysis procedure is indicated for patients with regional enteritis.

Accepted Answer

A) True 
 B)False

Question 11

In what position is the patient placed for the enema tip insertion?

Accepted Answer

A)  Sims'
B)  Lithotomy
C)  Modified lithotomy
D)  Prone

Question 12

Match each of the definitions or descriptions with the corresponding pathologic indication for the small bowel series.(Use each option only once.) 
-New growth observed in intestine as filling defects

Accepted Answer

A)  Ileus
B)  Neoplasm
C)  Meckel diverticulum
D)  Malabsorption syndrome (sprue) 
E)  EnteritisF) Regional enteritis (Crohn's disease) G) GiardiasisH) Adynamic or paralytic ileus

Question 13

While attempting to insert an enema tip into the rectum, the technologist experiences resistance.What should be the next step taken by the technologist?

Accepted Answer

A)  Retry the insertion using more lubrication.
B)  Ask the patient to try to insert it himself.
C)  Have the radiologist insert it using fluoroscopic guidance.
D)  Cancel the procedure.

Question 14

The average time to scan the large intestine during a computed tomography colonography is:

Accepted Answer

A)  1 hour.
B)  20 minutes.
C)  30 minutes.
D)  10 minutes.

Question 15

Which of the following barium enema projections and/or positions provides the greatest amount of gonadal dosage to both male and female patients?

Accepted Answer

A)  AP/PA
B)  Lateral rectum
C)  Left lateral decubitus
D)  Left posterior oblique

Question 16

Which of the following statements is NOT true in regard to a pediatric small bowel series?

Accepted Answer

A)  The transit time for barium through the small intestine is longer than that of an adult.
B)  Barium sulfate is the contrast medium of choice.
C)  The small bowel series should be scheduled early in the morning.
D)  A gonadal shield often cannot be used during the later stages of the study.

Question 17

Which sections of the large intestine will most likely be filled with air with the patient in the prone position during a double-contrast barium enema (BE) ?

Accepted Answer

A)  Ascending colon, descending colon, and rectum
B)  Transverse and sigmoid colon
C)  Rectum only
D)  Right and left colic flexure and sigmoid colon

Question 18

Match each of the definitions or descriptions with the corresponding pathologic indication for the small bowel series.(Use each option only once.) 
-Are often found 50 to 100 cm proximal to the ileocecal valve

Accepted Answer

A)  Ileus
B)  Neoplasm
C)  Meckel diverticulum
D)  Malabsorption syndrome (sprue) 
E)  EnteritisF) Regional enteritis (Crohn's disease) G) GiardiasisH) Adynamic or paralytic ileus

Question 19

Which aspect of the large intestine is located highest, or most superior, in the abdomen?

Accepted Answer

A)  Right colic flexure
B)  Left colic flexure
C)  Transverse colon
D)  Ascending colon

Question 20

Which of the following conditions may lead to an adynamic ileus?

Accepted Answer

A)  Small bowel tumor
B)  Scar tissue within the jejunum
C)  Peritonitis
D)  Stricture of ileum due to an inguinal hernia

Exam 13: Lower Gi System

Which of the following conditions would contraindicate the use of a cathartic before a barium enema?

Correct AnswerverifiedShow Answer

Which of the following statements is NOT true in regard to a pediatric small bowel series?

Correct AnswerverifiedShow Answer

While attempting to insert an enema tip into the rectum, the technologist experiences resistance.What should be the next step taken by the technologist?

Correct AnswerverifiedShow Answer

Which sections of the large intestine will most likely be filled with air with the patient in the prone position during a double-contrast barium enema (BE) ?

Correct AnswerverifiedShow Answer

The circular staircase, or herringbone pattern, is a common radiographic sign for a mechanical ileus.

Correct AnswerverifiedShow Answer

Which of the following barium enema projections and/or positions provides the greatest amount of gonadal dosage to both male and female patients?

Correct AnswerverifiedShow Answer

In what position is the patient placed for the enema tip insertion?

Correct AnswerverifiedShow Answer

The height of the enema bag should not exceed 36 inches (92 cm) above the radiographic table at the beginning of the study.

Correct AnswerverifiedShow Answer

Match each of the definitions or descriptions with the corresponding pathologic indication for the small bowel series.(Use each option only once.) -Are often found 50 to 100 cm proximal to the ileocecal valve

Correct AnswerverifiedShow Answer

The enteroclysis procedure is indicated for patients with regional enteritis.

Correct AnswerverifiedShow Answer

How much CR angulation is required for the AP axial projection taken during a barium enema examination?

Correct AnswerverifiedShow Answer

Which of the following conditions may lead to an adynamic ileus?

Correct AnswerverifiedShow Answer

What type of enema tip is recommended for a barium enema on an infant?

Correct AnswerverifiedShow Answer

Why is the posteroanterior (PA) rather than the AP projection recommended for a small bowel series?

Correct AnswerverifiedShow Answer

A patient comes to radiology for a double-contrast barium enema.The patient cannot lie on her side during the study.Which of the following projections could replace the lateral rectum projection?

Correct AnswerverifiedShow Answer

The average time to scan the large intestine during a computed tomography colonography is:

Correct AnswerverifiedShow Answer

Match each of the definitions or descriptions with the corresponding pathologic indication for the small bowel series.(Use each option only once.) -New growth observed in intestine as filling defects

Correct AnswerverifiedShow Answer

A radiograph of an AP barium enema (BE) projection reveals poor visualization of the sigmoid due to excessive superimposition of the sigmoid colon and rectum.How can this area be better visualized on the repeat exposure?

Correct AnswerverifiedShow Answer

Synthetic latex enema tips are safe to use for latex-sensitive patients.

Correct AnswerverifiedShow Answer

Which aspect of the large intestine is located highest, or most superior, in the abdomen?

Correct AnswerverifiedShow Answer

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